A vital tool in the preparation of police officers for promotion, this book addresses important areas that police supervisors must understand if they are to make a significant contribution to the law enforcement agency and function as positive supervisors. This popular book combines behavioral theory with case studies that allow the reader to identify and resolve personal and organizational problems. This creates a focus on effectiveness as well as proficiency and on how a supervisor can help to create an effective organization. -Each chapter opens with a case study to illustrate the concept and includes key terms. -Used nationwide for police promotional exams. -Contains a new chapter on homeland security and terrorism and how they are changing the role of the police supervisor